I recommend we go to these sellers listings of know suspect items and click on the "Report Item" flag and that way ebay will get some idea that they may have a big big problem here!
The category to chose is "Fraudulent Listing" and chose the sub option that you "didn't bid" and enter a brief description, eg "Seller claims device is 16Gb whereas there is proof its 4Gb" and so on
May work
ian